Hi all,
I'm putting a few plots together and wondering what format would be best to
export a few scatter plots to Illustrator to make a figure. I'm thinking
about overlaying some plot in Illustrator, so the export file type has to be
transparent for Illustrator (version 10).
I tried PNG and TIFF, but it does not seems to have transparency that is
recognized by Illustrator (or Photoshop for that matter).

EMF (meta data file) on the other hand is very good. The only problem is
that every dot on the plot becomes a vector, which slows the program down
considerably (I have about 200k dots on a graph).

So, is there a good way to import these plot in as picture so I can use them
as layer for Illustrator (Photoshop would be fine too).

Thank you all.

-- 
Regards,
Anh Tran

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